English  |  正體中文  |  简体中文  |  Items with full text/Total items : 70585/70585 (100%)
Visitors : 23047959      Online Users : 491
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version

    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/27820

    Title: A Close Binary Star Resolved from Occultation by 87 Sylvia
    Authors: Lin,CL;Zhang,ZW;Chen,WP;King,SK;Lin,HC;Wang,JH;Mondal,S;Alcock,C;Axelrod,T;Bianco,FB;Byun,YI;Coehlo,NK;Cook,KH;Dave,R;de Pater,I;Descamps,P;Lehner,MJ;Kim,DW;Lee,T;Lissauer,JJ;Marshall,SL;Porrata,R;Protopapas,P;Rice,JA;Schwamb,ME;Wang,SY;Wen,CY
    Contributors: 天文研究所
    Date: 2009
    Issue Date: 2010-06-29 19:34:20 (UTC+8)
    Publisher: 中央大學
    Abstract: The star BD +29 1748 was resolved to be a close binary from its occultation by the asteroid 87 Sylvia on 2006 December 18 UT. Four telescopes were used to observe this event at two sites separated by some 80 km. Two flux drops were observed at one site, whereas only one flux drop was detected at the other. From the long-term variation of Sylvia, we inferred the probable shape of the shadow during the occultation, and this in turn constrains the binary parameters: the two components of BD +29 1748 have a projected separation of 0 ''.097-0 ''.140 on the sky with a position angle 104 degrees-11 degrees 0. The asteroid was clearly resolved, with a size scale ranging from 130 to 290 km as projected onto the occultation direction, consistent with the size dimensions 385 x 265 x 230 km, measured by direct adaptive optics imaging. No occultation was detected for either of the two known moonlets of 87 Sylvia.
    Appears in Collections:[天文研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat

    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明